Explain how many femtometers are in a nanometer?

916

---

Explain what is free fall acceleration?

967

---

Explain what is relation between magnetic and electricity and why?

882

---

Explain what is optical medium?

883

---

Explain the working of basic rubber ink filler

879

---

Explain what is the rectilinear propagation of light?

910

---

Explain what is photometry?

873

---

Tell me when taken to the top of a mountain, a clock will go fast or go slow or no change or stop?

855

---

Explain what is h1n1?

901

---

Explain what is the shadows?

893

---

Explain what is the heterogenous?

866

---

Tell me how we are getting light from electrical bulb?

831

---

Draw a graph between frequency of photon and velocity of photo electron?

840

---

What are the ten satellite launched from india and year of launch?

933

---

explain the proper definition of light?

929

---